Artifact Creature - Scarecrow 4/4, 3 (3) As Lurebound Scarecrow enters the battlefield, choose a color.
When you control no permanents of the chosen color, sacrifice Lurebound Scarecrow.1 It's a fool's race to run if all is lost if it be won.
Illus. Nils Hamm
5/1/2008: If you control a Lurebound Scarecrow but no color was chosen for it (perhaps because your Cemetery Puca turned into a Lurebound Scarecrow), the trigger condition will have an undefined value in it. It’ll never trigger, so you won’t have to sacrifice the Scarecrow.